User Email Fiend in Support Ticket to create customer

My company gets a lot of our service requests from phone calls as well as email. Is there a way to create a user when making a ticket in service desk to set a requester field so that if we get a phone call I can just type the users email to add them to the notifications list?

If I'm not clear the flow would be similar as such

User calls with issue

Ticket is made and users email is added to ticket as requester / a watcher

Hey everyone! My name is Sarah Schuster, and I'm a Customer Success Manager in Atlassian specializing in Jira Software Cloud. Over the next few weeks I will be posting discussion topics (8 total) to ...